A patient on captopril asks for an OTC cough syrup. What should the pharmacist consider?

A patient on captopril asks for an OTC cough syrup. What should the pharmacist consider?

• A. OTC cough syrup is safe; no changes needed
• B. ACE cough is a common side effect; pharmacist should be alerted
• C. The cough is unrelated to captopril; no need to alert
• D. The patient should stop captopril immediately

Answer: (B)

ACE inhibitors like captopril can cause a dry, persistent cough due to the buildup of bradykinin. This side effect is common and not related to infection, so when a patient on captopril asks for an OTC cough syrup, the pharmacist should recognize that the cough may be related to the medication and consider communicating this to the patient and/or prescriber. If the cough is bothersome, a clinician might evaluate switching to a different antihypertensive (such as an ARB) or adjusting therapy, since the cough often resolves after stopping the ACE inhibitor. In the meantime, review the OTC product’s ingredients and avoid options that could raise blood pressure, like decongestants (pseudoephedrine, phenylephrine) if the patient has hypertension or is on captopril. Encourage the patient to seek medical advice rather than stopping captopril abruptly.

ACE inhibitors like captopril can cause a dry, persistent cough due to the buildup of bradykinin. This side effect is common and not related to infection, so when a patient on captopril asks for an OTC cough syrup, the pharmacist should recognize that the cough may be related to the medication and consider communicating this to the patient and/or prescriber. If the cough is bothersome, a clinician might evaluate switching to a different antihypertensive (such as an ARB) or adjusting therapy, since the cough often resolves after stopping the ACE inhibitor. In the meantime, review the OTC product’s ingredients and avoid options that could raise blood pressure, like decongestants (pseudoephedrine, phenylephrine) if the patient has hypertension or is on captopril. Encourage the patient to seek medical advice rather than stopping captopril abruptly.